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All results from a given calculation for C2H4S (Thiirane)

using model chemistry: B3LYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/6-311G*
 hartrees
Energy at 0K-476.826578
Energy at 298.15K-476.831010
HF Energy-476.826578
Nuclear repulsion energy100.551007
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3LYP/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3125 3020 18.69      
2 A1 1514 1463 4.56      
3 A1 1152 1113 4.06      
4 A1 1052 1017 0.20      
5 A1 626 605 28.35      
6 A2 3203 3095 0.00      
7 A2 1205 1165 0.00      
8 A2 911 880 0.00      
9 B1 3219 3110 11.56      
10 B1 968 936 11.26      
11 B1 849 821 0.56      
12 B2 3123 3018 18.67      
13 B2 1486 1436 0.98      
14 B2 1080 1044 46.81      
15 B2 655 633 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 12084.6 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 11677.3 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3LYP/6-311G*
ABC
0.73836 0.35211 0.26348

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
S1 0.000 0.000 0.875
C2 0.000 0.739 -0.807
C3 0.000 -0.739 -0.807
H4 -0.913 1.255 -1.081
H5 0.913 1.255 -1.081
H6 0.913 -1.255 -1.081
H7 -0.913 -1.255 -1.081

Atom - Atom Distances (Å)
  S1 C2 C3 H4 H5 H6 H7
S11.83721.83722.49702.49702.49702.4970
C21.83721.47851.08421.08422.21082.2108
C31.83721.47852.21082.21081.08421.0842
H42.49701.08422.21081.82673.10492.5107
H52.49701.08422.21081.82672.51073.1049
H62.49702.21081.08423.10492.51071.8267
H72.49702.21081.08422.51073.10491.8267

picture of Thiirane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
S1 C2 C3 66.274 S1 C2 H4 115.005
S1 C2 H5 115.005 S1 C3 C2 66.274
S1 C3 H6 115.005 S1 C3 H7 115.005
C2 S1 C3 47.453 C2 C3 H6 118.425
C2 C3 H7 118.425 C3 C2 H4 118.425
C3 C2 H5 118.425 H4 C2 H5 114.791
H6 C3 H7 114.791
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 S 0.011      
2 C -0.506      
3 C -0.506      
4 H 0.250      
5 H 0.250      
6 H 0.250      
7 H 0.250      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.168 2.168
CHELPG        
AIM        
ESP 0.024 0.000 -2.202 2.202


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.702 0.000 0.000
y 0.000 -24.747 0.000
z 0.000 0.000 -26.755
Traceless
 xyz
x -0.951 0.000 0.000
y 0.000 1.982 0.000
z 0.000 0.000 -1.031
Polar
3z2-r2-2.062
x2-y2-1.955
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.020 0.000 0.000
y 0.000 5.135 0.000
z 0.000 0.000 6.866


<r2> (average value of r2) Å2
<r2> 57.215
(<r2>)1/2 7.564